The practice of special juries was discontinued, but nineteenth-century English and Empire Courts invoked trade customs on the basis of implied contract.

While some express concerns the mall will change both the dynamics and the esthetics of the city, others have seen the mall as a threat to the traditional trading customs.

Oral contracts are possibilities in situations where well-established trade customs can be proved, and contain principles of exemption from liability upon which the party in default can rely.

Dominican Commercial Law, whose direct and main source is the Commercial Code, has as subsidiary sources, the Civil Code and the trade customs.

To complicate matters further, differences exist as regards legal systems, trade customs and language, all of which increase the probability of trade contract errors and make settlement of these more difficult.

However, a statement by the Korea Taxpayers' Association claimed that the down contract was in accordance to the trade customs and thus not unlawful due to flaws in the local tax law between 1996 and 2005.

The legitimacy of trade customs as a subsidiary source of the Dominican Commercial Law can be derived from several articles of the Dominican Civil Code such as articles 1135, 1159 and 1160 .

During their rule, sea captains would customarily land at Bolivar Peninsula and roll imported or exported goods across a small patch of land to or from the aptly named Rollover Bay to avoid the Galveston trade customs.

In addition, by the 10th century, the Law Merchant, first founded on Scandinavian trade customs, then solidified by the Hanseatic League, took shape so that merchants could trade using familiar standards, rather than the many splintered types of local law.